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Integration between Micronaut and Kafka Messaging

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/*
 * Copyright 2017-2020 original authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.micronaut.configuration.kafka;

import io.micronaut.messaging.Acknowledgement;

/**
 * Defines an interface that can be injected into {@link io.micronaut.configuration.kafka.annotation.KafkaListener} beans so that offsets can be manually committed.
 *
 * @author James Kleeh
 * @since 1.1.0
 */
public interface KafkaAcknowledgement extends Acknowledgement {

    /**
     * Kafka does not support rejection of messages explicitly.
     *
     * @throws UnsupportedOperationException if called
     */
    @Override
    default void nack() {
        throw new UnsupportedOperationException("Kafka does not support rejection of messages explicitly");
    }
}